Wsd Column
1
DESIGN OF SPIRAL COLUMN GIVEN: LOADS: DESIGN SPEC'S: PDL = 0 KN fc' = 21 MPa PLL = 0 KN fy = 345 MPa PEQ = 0 KN OR P = 750 KN COLUMN PROPERTIES: LU = 8 m db = 25 mm D = 450 mm ds = 10 mm CURVATURE = 2 TYPE " 1 " IF DOUBLE CURVATURE TYPE " 2 " IF SINGLE CURVATURE DESIGN LOAD: DESIGN SPIRAL TIES: P = 750.00 KN Dc = 370 mm h/r = 71 Ac = 107521 mm^2 P' = 1496.67 KN Ag = 159043 mm^2 P' = Ag [0.25fc' + fspg ps = 0.0131 fs = 138.00 MPa Abs = 79 mm^2 pg = 0.0301 S = 70 mm As = 4794.91 mm^2 use S = 70 mm Ab = 491 mm^2 N = 10 - 25 mm check spacing: Dm = 325 mm S = 77 mm O.K. SOLUTION :
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Transcript of Wsd Column
DESIGN OF SPIRAL COLUMN
GIVEN:LOADS: DESIGN SPEC'S:
PDL = 0 KN fc' = 21 MPaPLL = 0 KN fy = 345 MPaPEQ = 0 KN
ORP = 750 KN
COLUMN PROPERTIES:LU = 8 m db = 25 mm
D = 450 mm ds = 10 mmCURVATURE = 2 TYPE " 1 " IF DOUBLE CURVATURE
TYPE " 2 " IF SINGLE CURVATURE
DESIGN LOAD: DESIGN SPIRAL TIES:P = 750.00 KN Dc = 370 mm
h/r = 71 Ac = 107521 mm^2P' = 1496.67 KN Ag = 159043 mm^2P' = Ag [0.25fc' + fspg] ps = 0.0131fs = 138.00 MPa Abs = 79 mm^2
pg = 0.0301 S = 70 mmAs = 4794.9104 mm^2 use S = 70 mmAb = 491 mm^2
N = 10 - 25 mmcheck spacing:
Dm = 325 mmS = 77 mm O.K.
SOLUTION:
